RelCheck vs Tether
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RelCheck
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RelCheck helps you maintain regular contact with the people who matter. When the mind gets easily distracted, relationships can quietly drift. RelCheck ensures they do not. Set how often you want to check in with each person. When the time comes, RelCheck reminds you. Reach out in your preferred way—call, message, or any channel you choose—then mark it as done and continue your day, with peace of mind. Features list: - Fit your needs: add your contacts and choose check-in intervals for each - Never forget: timely reminders - Optional daily quick check-in mode - Clean, quick, iOS-style, distraction-free experience - Privacy first: we don't need your data—keep it - Seamless iCloud backups and sync across devices - Works on iOS, iPadOS and macOS - Light and dark modes supported - English and French translations available Designed with a simple goal: staying present in your relationships.
Tether
Seamlessly integrate your mobile device with your Linux desktop. Share clipboards, transfer files, and discover your desktop locally over Wi-Fi. All communication is secured with end-to-end encryption, with no cloud servers or accounts needed.
- Shared Clipboard Sync
- Bi-directional File Transfers
- Local Network Discovery
- End-to-End Encryption
- No Cloud Services Required
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Tether is an app designed for Linux users running custom desktop environments (Wayland). It provides essential ecosystem integration between your mobile device and your workstation, operating entirely over your local Wi-Fi. There are no cloud servers, third-party services, or accounts required. All data is routed strictly on your local network and secured with end-to-end mTLS encryption. Features: • Shared Clipboard: Sync clipboard text bi-directionally between your iPhone and your Linux machine. • File Transfers: Send documents, photos, and archives directly to your desktop, or receive files from it. • Local Discovery: Uses mDNS/Bonjour to automatically find your desktop - no static IP configuration needed. • Encrypted Connections: Device pairing and all network traffic are secured via mutual TLS certificates. Note: Tether is the iOS client app. To use it, simply run the free, open-source Tether desktop application (available as a CLI or GTK app) on your Linux machine. Visit the project's repository to download it and get started.
Screenshots
Verdict
The clearest difference is iOS requirement: RelCheck at 17.0 against Tether's 26.1. On price, ads, in-app purchases and device support 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. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | RelCheck | Tether |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 2 — better |
| Update frequency | — | Weekly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 17.0 — better | 26.1 |
| Further details — not scored | ||
| Size | 3 MB | 6 MB |
| Age rating | 12+ | 4+ |
| Developer | Anne Ferret | Zack Bartel |
In-app purchases
RelCheck
No in-app purchases
Tether
No in-app purchases









