PromoKit vs Sandbox Relay
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PromoKit
Streamline App Store offer code management. Import CSVs, organize codes by app and product, and easily share the next available code via text, copy, or a branded QR card. Track usage, recipients, and expiry dates, with data stored locally or in iCloud.
- Import App Store Connect CSVs
- Organize by app and product
- Share, copy, or QR-share codes
- Track recipients and inventory
- Mark codes as used
- Set expiry dates
- Export usage history
Read full descriptionHide full description
PromoKit helps app developers organize App Store offer-code campaigns without spreadsheet busywork. Import offer-code CSVs from App Store Connect, group codes by app and product, and share the next available code when a reviewer, tester, creator, or customer needs one. PromoKit can send code text through the iOS share sheet, copy a code, or create a branded QR share card that opens the redeem flow. Keep campaign history tidy as codes move. Mark codes as shared, record recipient names, set expiry dates, separate expired offers, and export CSVs with usage state preserved. Your code lists stay under your control. PromoKit stores campaign state in iCloud Documents when available, with a local Application Support fallback, and does not include advertising, third-party analytics, or tracking SDKs. Features: - Import App Store Connect offer-code CSVs - Organize multiple apps, products, and offers - Share, copy, or QR-share the next available code - Track recipients, shared dates, and remaining inventory - Mark codes used individually or in bulk - Set offer expiry dates and group expired offers - Export CSVs with sharing history preserved - Use light, dark, or system appearance
Sandbox Relay
Read full descriptionHide full description
For developers who run Claude Code or Codex in Docker Sandbox, Sandbox Relay is the phone client for driving that agent. It is a companion, not a standalone app: it needs a broker you run, with an agent connected behind it. Kick off a task from the train, check on a long-running job from the couch, or steer the agent while you are away from your desk. Docker Sandbox runs each agent in its own isolated micro VM. A small broker you self-host sits in the middle: you send work from your phone, the broker passes it to the agent, and the streamed reply comes back. Your infrastructure, your agent. The app is just the remote. New to this setup? The app's support page explains how it works and what you need to run it. WHAT YOU CAN DO - Connect to your broker with a URL and a bearer token. Connections use HTTPS, with plain HTTP allowed only for local-network addresses. - See every connected agent at a glance, with live online/offline status. - Send the agent work and watch its reply stream in token by token. Stop a turn mid-stream, or start a fresh thread whenever you want. - When an agent goes offline, its thread stays readable as history. - See per-turn input and output token counts when the broker reports them. - Save reusable prompts as local notes, organised by hierarchical tags like #work/project/feature. Drill down by tag, copy a note straight into a thread, or link a note to the thread it came from. Notes live on your device only; they never touch the broker. WHAT YOU NEED - A broker you run, reachable from your phone (over your local network, or remotely through a tunnel or private network you control). - A coding agent, Claude Code or Codex, running in Docker Sandbox and connected to that broker. PRIVACY Sandbox Relay talks only to the broker you configure. Your access token is stored securely on your device and sent only to that broker, to authenticate you; it never goes to the developer or any third party. Your notes stay on your device and are never sent anywhere. No third-party analytics, no account to create. Note that the app streams whatever your agent outputs, verbatim.
Screenshots
Verdict
The clearest difference is in-app purchases: Sandbox Relay at none against PromoKit's 1. On price, ads, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. PromoKit sells 1 one-off in-app purchase. Sandbox Relay asks for nothing beyond the download.
| Parameter | PromoKit | Sandbox Relay |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 3 weeks | — |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free | — |
| Devices | iPhone | iPhone |
| Requires iOS | 17.0 | 16.4 — better |
| Further details — not scored | ||
| Size | 3 MB | 32 MB |
| Age rating | 4+ | 12+ |
| Developer | Erik Handeland | Eric Boumendil |
In-app purchases
PromoKit
- Support the Developer$0.99
Sandbox Relay
No in-app purchases









