Agent testing / Revyl Mobile Development / Testing alternative

Revyl alternative for persistent agent runtime state

Revyl is a mobile development and testing platform with cloud iOS simulators and Android emulators, agent integrations and test artifacts. Its device sessions are a specialized target for an agent, rather than a general durable Linux computer. A workflow may need both types of infrastructure.

Start buildingCompare capabilities ↓

Reviewed 2026-10-19 · Published by the Sandbox0 team

When Revyl Mobile Development / Testing fits

Choose Revyl for interacting with mobile apps, streaming simulator sessions and automating mobile verification with CLI/API or agent integrations. Keep native iOS testing and specialized mobile execution on appropriate device infrastructure.

When to consider Sandbox0

Consider Sandbox0 for the compatible Linux agent that prepares code, manages tools and accumulates system state between tasks. It can retain a growing whole writable RootFS and support paused-file operations; it does not replace Revyl’s native iOS device environment.

Capabilities

Revyl Mobile Development / Testing and Sandbox0: what persists?

Feature comparison with documentation and verification status
Environment and runtime lifetimeRevyl Mobile Development / TestingNot established in this reviewSandbox0ttl and hard_ttl default to 0 (disabled). Configure idle pause and deletion policies for the same persistent sandbox identity; an idle running sandbox still accrues compute charges.Read documentation →
Persistent filesRevyl Mobile Development / TestingDevice controls and test artifacts do not specify durable arbitrary agent-system storage across all device sessions.View evidence ↗Sandbox0The writable RootFS survives successful checkpoints, including software, system configuration, dependencies, and user data.Read documentation →
Whole RootFSRevyl Mobile Development / TestingThe mobile infrastructure description does not establish complete writable agent RootFS retention.View evidence ↗Sandbox0Persistence extends beyond /workspace to paths such as /usr/local, /etc, and /home. Runtime tmpfs and virtual filesystems are excluded.Read documentation →
Release compute, keep stateRevyl Mobile Development / TestingDevice start/stop does not establish arbitrary process-preserving pause/resume.View evidence ↗Sandbox0Pause compute between tasks; resume on available capacity. Default resume starts fresh processes from the saved filesystem.Read documentation →
Memory and process stateRevyl Mobile Development / TestingStreaming and test history do not establish arbitrary RAM snapshot recovery.View evidence ↗Sandbox0Experimental memory checkpoints can preserve compatible process state. Use memory: true on both pause and resume on a compatible deployment. A filesystem checkpoint alone does not preserve running processes.Read documentation →

Online RootFS growth

On growth-enabled images, Sandbox0 automatically expands the writable RootFS as free space runs low, within a configured sparse logical ceiling up to 64 TiB. Agent processes keep running. Growth is enabled in the qualified Cloud region; confirm activation for other regions. Existing images and snapshots retain their captured storage geometry. The ceiling is logical capacity, not preallocated host disk.

Revyl mobile device sessions and test artifacts address app verification. The cited infrastructure does not establish automatic online expansion of an entire durable general-purpose agent RootFS.

Files while compute is paused

Sandbox0's Files API reads persistent files without resuming compute. Filesystem-only pauses also permit edits; retained-memory pauses are read-only and reject mutations with 409. SSH, SFTP, file watching, and runtime-only mounts require running compute.

Stored reports, recordings and artifacts expose selected testing outputs. They do not establish arbitrary system-file reads and mutations throughout a paused agent computer’s durable RootFS.

See paused file operations →

Device sessions and test evidence have a specific scope

Revyl exposes device start/stop and interaction controls for iOS simulators and Android emulators. Streaming and test reports help an agent verify an app, but do not establish a durable complete Linux RootFS or arbitrary memory checkpoint for the orchestrating agent.

Source 1 ↗

Compare current plan credit and extra usage

The current Monthly pricing view lists Starter at $250 with $250 of included compute credit and Team Pro at $750 with $750 of credit. When overage is enabled, iOS and Android have different minute rates, and LLM work draws from the same allowance. Included credit is not a second mandatory charge.

Source 1 ↗

Concurrency and dedicated capacity depend on the plan

Revyl separates shared device access from dedicated instances, dedicated iOS runners and custom enterprise terms. Verify current account entitlements and concurrency before sizing a test suite. A subscription or dedicated runner quote is different from a universal general-purpose Mac or Linux machine rental.

Source 1 ↗

Pricing

Compare billing models, then price your workload

CPU allocation, memory, billing minimums, disk, plan fees, and supported workload differ. These meters are not equal-performance machine quotes. Confirm region, resource units, and included allowances before estimating a total.

Revyl Mobile Development / Testing

Pricing reviewed 2026-10-19

Free monthly entry plan
$0/month with limited included usage
Monthly plan reference; extra usage and account entitlements require confirmation.
Rate source ↗
Starter monthly reference
$250/month
Plan includes $250/month compute credit; check current concurrency.
Rate source ↗
Team Pro monthly reference
$750/month
Plan includes $750/month compute credit; dedicated capacity has separate terms.
Rate source ↗
Enabled simulator/emulator overage
$0.15/min iOS; $0.12/min Android
LLM usage also draws from the plan allowance; confirm effective billing policy.
Rate source ↗

Use the current plan and account quote. Free and paid plans have different included compute and concurrency; do not assume unlimited sessions or add included credit to the subscription twice. Annual terms, extra usage and dedicated capacity affect the total.

Check current Revyl Mobile Development / Testing pricing ↗

Sandbox0

$0.015/GiB-hour compute (billed by the second at approximately $0.000004167/GiB-second), plus $0.02/GiB-month of retained incremental RootFS and memory checkpoint data. Shared base images and platform recovery retention are excluded; paused sandboxes accrue storage charges only.

Compute / GiB-hour
$0.015
Retained data / GiB-month
$0.02
Paused compute
$0.00

A 4 GiB agent, 100 running hours

$6.00 compute

4 GiB × 100 hours, billed by the second. Keeping 20 GiB of billable incremental data for a full billing month adds $0.40. CPU is derived from memory by the platform; choose a tier that fits your workload.

Understand storage billing →

Before migrating from Revyl Mobile Development / Testing

  1. Separate the mobile test/device service from the orchestrating agent; inventory apps, device sessions, test evidence, integrations and current plan limits.
  2. Move compatible Linux orchestration and repository work while keeping native mobile verification on Revyl or suitable device infrastructure.
  3. Test artifact transfer, persistent tools, online RootFS growth, paused files and combined device/LLM usage plus Linux runtime/storage costs.

Common questions

Is Sandbox0 a drop-in Revyl Mobile Development / Testing replacement?

Evaluate API compatibility and product scope. These products serve different core workflows, so a change may require a different architecture.

Does keeping files also keep a running agent?

Filesystem state and volatile process state are separate. Sandbox0 requires explicit compatible memory checkpoints to preserve running processes; its default filesystem resume starts fresh processes.

Sources and review scope

The Boat team's Battleships directory is the discovery source. References below describe the product and plan discussed on this page. Check current availability, regional terms and billing units before migrating. Where the cited material does not establish a capability or price, the comparison identifies that uncertainty.

Battleships research record ↗revyl.com/products/mobile-infrastructure/ ↗revyl.com/pricing/ ↗Sandbox0 RootFS capacity →

Related comparisons

Archal vs Sandbox0 →Arga Labs vs Sandbox0 →AutoComputer Research / Computer-use Services vs Sandbox0 →Chronicle Labs vs Sandbox0 →Halluminate vs Sandbox0 →HUD vs Sandbox0 →