Phone Tester vs CaspiAPI
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Phone Tester
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Phone Tester is a toolbox to check your iPhone or iPad. It shows your device specs and live memory, storage and battery readings, and lets you run quick hardware tests by eye and ear. --- WHAT IT DOES --- - Device info Model, chip, RAM, storage, screen and iOS version in one place. - Live readings Battery level and charging state, memory, storage, connection type and thermal state, plus a live graph of the CPU used by this app. - Hardware tests Dead pixel test with solid colours, speaker tones, microphone level, bubble level, compass, barometer, proximity sensor, light meter (relative brightness), GPS accuracy, Bluetooth scanner, keyboard and gesture tests. - Export and widgets Export your device specs as a PDF and add Home Screen and Lock Screen widgets. - Pro (optional subscription) Removes ads and unlocks extra tools: decibel meter, gyroscope, magnetometer, metal detector, pedometer, altitude, thermal state, touch latency, haptics, NFC check, Face ID test, charging analyzer, more display tests, CSV and JSON export and PDF without watermark. --- GOOD TO KNOW --- It does not read battery health or charge cycles: iOS does not give them to apps (see Settings > Battery). Some tests need the right hardware, for example a barometer or a proximity sensor. COMMON QUESTIONS Does it need an account or internet? No account. Everything is read from the device itself; only the optional latency test uses the internet. What can it actually measure? Whatever the device's own sensors expose: level, compass, magnetometer, barometer, gyroscope, ambient light (relative, not lux), microphone level, battery level, storage, memory and the screen's dead-pixel test. Does it show battery health? No. iOS does not let apps read battery health or cycle count. Check Settings > Battery > Battery Health. Is the metal detector real? It reads the magnetometer, the same sensor the compass uses. It reacts to ferrous metal and to magnets. It is not an industrial detector and it will not find gold. Is the decibel reading accurate? It is the microphone's reading, uncalibrated. Good for comparing one room to another, not for a legal noise measurement. Does it change anything on my phone? No. It reads and reports; it does not clean, optimise or modify anything. Terms of Use: https://masaapps360.com/devicemonitor/terms/ Privacy Policy: https://masaapps360.com/devicemonitor/privacy/
CaspiAPI
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CaspiAPI is a fast, native API client for developers โ a Postman alternative that runs beautifully on iPhone, iPad and Mac. Build requests, inspect responses, run whole collections and automate tests, all from one polished app that works offline and keeps your data encrypted on-device. Already using Postman? Import your collections and environments in seconds and keep working โ your pre-request and test scripts run exactly as they do on the desktop. BUILT FOR REAL WORK - Full REST/HTTP support โ GET, POST, PUT, PATCH, DELETE and more - Multi-tab editor: query params, headers, body (JSON, form, raw), auth - Syntax-highlighted JSON responses with status, timing and size - Request history so you never lose what you sent POSTMAN-COMPATIBLE SCRIPTING - Run pre-request and test scripts with a real JavaScript engine - pm.* API support โ pm.test, pm.environment, pm.response and more - Built-in CryptoJS for HMAC / SHA-256 signing and custom auth flows - Collection Runner executes requests in sequence and chains variables: a value captured in one request is instantly available to the next POWERFUL VARIABLES & ENVIRONMENTS - 5-level variable scope โ global, collection, environment, and beyond - Switch environments instantly to move between dev, staging and prod - Edit any scope inline without leaving your request PRIVATE BY DESIGN - All data stored locally in an AES-256 encrypted database - The encryption key lives in the Secure Enclave (Keychain) โ never in plain text - Works fully offline; your requests and secrets stay on your device NATIVE ON EVERY SCREEN - One app for iPhone, iPad and Mac โ buy once, use everywhere - Adaptive layout: touch-friendly action sheets on iOS, full menus on Mac - Beautiful dark and light themes that follow your system automatically - Clean typography built for reading code Whether you're testing a production API on your phone, debugging a webhook on iPad, or running a full test suite on your Mac, CaspiAPI gives you a focused, secure and genuinely fast workflow. Download CaspiAPI and bring your API workflow with you โ everywhere.
Screenshots
Verdict
The clearest difference is in-app purchases: CaspiAPI at none against Phone Tester's 4. CaspiAPI also leads on ads (none vs shown) and update cadence (every 4 days vs every 3 weeks). On price and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Phone Tester sells 4 in-app purchases, starting at $0.99 per 7 days. CaspiAPI asks for nothing beyond the download.
Phone Tester ships an update every 3 weeks, CaspiAPI every 4 days. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.
| Parameter | Phone Tester | CaspiAPI |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks | Every 4 days โ better |
| Ads | Yes | No โ better |
| In-app purchases | Yes | No โ better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Mac โ better |
| Requires iOS | 15.0 | 13.0 โ better |
| Further details โ not scored | ||
| Size | 12 MB | 26 MB |
| Age rating | 4+ | 4+ |
| Developer | Grima Hdez | Muhammed Ismayilov |
In-app purchases
Phone Tester
- Device Monitor Pro Weekly3 Days trial$0.997 Days
- Device Monitor Pro Monthly$1.991 Month
- Device Monitor Pro Yearly$2.991 Year
- Device Monitor Pro Lifetime$3.99
CaspiAPI
No in-app purchases
Questions
Is Phone Tester free?
Is CaspiAPI free?
Do Phone Tester or CaspiAPI have ads?
Which is updated more often, Phone Tester or CaspiAPI?
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