Keys Tester vs Pier Shell
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Keys Tester
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Keys Tester β API Key Validator & Monitor Stop guessing if your API keys work. Keys Tester lets you validate API keys against 20+ services in seconds β so you can catch issues before your users do. Key Features: β’ One-Tap Testing β Validate any API key against 20+ services including Maps, Directions, Geocoding, Places, and more. β’ Bulk Key Testing β Test all your saved keys at once and get a clear pass/fail summary for every API. β’ Manual Key Entry β Quickly add keys by pasting them directly into the app. β’ Real-Time Monitoring β Set up continuous monitoring for your critical keys and receive push notifications the moment an API fails. β’ Route Tester β Test Directions and Distance Matrix APIs with real pickup and drop-off locations, complete with reverse geocoding and interactive maps. β’ Detailed Results β See exactly which APIs are enabled, which return permission errors, and which are failing β with full error messages. β’ Secure & Private β Your keys stay on your device. No data is sent to third-party servers. Perfect for: Mobile & web developers managing Cloud projects QA engineers validating API configurations DevOps teams monitoring production API keys Freelancers auditing client projects Download Keys Tester and take control of your API keys today.
Pier Shell
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No separate account required Pier works with your existing iCloud account to keep supported data synchronized across your Apple devices. Thereβs no Pier registration, username, or password to manage. Pier is a native SSH and SFTP client built for developers who want a simple, fast way to access their servers from iPhone and Mac. Add your hosts once and keep them synced privately through iCloud. Connect to production, staging, personal servers, Raspberry Pis, and more without rebuilding your setup on every device. Pier is designed to feel at home on Apple platforms, with a clean native interface, fast terminal performance, and secure key handling.
Screenshots
Verdict
The clearest difference is update cadence: Keys Tester at every 5 days against Pier Shell's every 2 weeks. Keys Tester also leads on iOS requirement (15.1 vs 26.5). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Keys Tester ships an update every 5 days, Pier Shell every 2 weeks. The most recent releases landed on November 9, 2026 and November 10, 2026 respectively.
| Parameter | Keys Tester | Pier Shell |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 days β better | Every 2 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPad, Mac β better |
| Requires iOS | 15.1 β better | 26.5 |
| Further details β not scored | ||
| Size | 32 MB | 13 MB |
| Age rating | 4+ | 4+ |
| Developer | PUNCAK NIAGA BERSAMA SDN. BHD. | Muhamad Nur Asyraaf |
In-app purchases
Keys Tester
No in-app purchases
Pier Shell
No in-app purchases









