Comparison

Write ID vs Periphery

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

Write ID

Read full description

Write ID is an APP that can be used to Write and modify device ids for multiple devices of our company - The APP is mainly used for internal testing and customers who purchase the company's products -The APP is mainly released in China and other countries

About

Periphery

Features
Read full description

Professional Bluetooth LE scanner and debugger for iOS. Periphery gives developers, engineers, and power users a complete toolkit for inspecting Bluetooth Low Energy devices. Scan nearby devices, read GATT services and characteristics, write values, and subscribe to notifications โ€” all in one elegant app. FEATURES - Scan and discover nearby BLE devices in real time - Full GATT inspector: browse services, characteristics, and descriptors - Read, write, and subscribe to BLE characteristics - Automatic UUID identification for known devices - Device fingerprinting: identify chips from Nordic, ESP32, Xiaomi, Shelly - Offline UUID database โ€” no internet required - Dark interface optimized for hardware labs - Find lost Bluetooth devices, tags, and trackers by signal strength (RSSI) with a live proximity meter, a signal graph and an optional beep that speeds up as you get closer - Give devices your own names: they keep them next time and are listed first - Filter the list by minimum signal or hide devices that advertise no name PRO FEATURES Unlock with Periphery Pro: - Unlimited scanning, with no session limit - Session logging: every read, write and notification saved - Unlimited saved sessions, exportable as plain text - No ads, ever FREE VERSION Free to download. The first 3 scan sessions are free, with ads. Unlimited scanning, session logs and no ads need Periphery Pro (subscription or lifetime purchase). BUILT FOR - iOS and embedded developers - IoT engineers and hobbyists - Hardware prototypers - QA engineers testing BLE products - Anyone debugging Bluetooth connectivity - Anyone hunting a lost Bluetooth tag, tracker, or pair of earbuds COMMON QUESTIONS Does it work without an account or internet? Yes to both. Everything happens over Bluetooth on the device. What can it actually see? Any Bluetooth Low Energy device advertising nearby: name, address, RSSI, advertisement data, then the full GATT tree โ€” services, characteristics, descriptors โ€” with read, write and notify. Can it find my lost earbuds or a tracker? It can tell you whether they are advertising and how strong the signal is, which gets you warmer or colder as you walk. It cannot show a map or a direction: BLE gives signal strength, not bearing. Does it work with classic Bluetooth devices? No. iOS only exposes Bluetooth Low Energy to apps. Car kits and older audio devices that use classic Bluetooth are invisible to any app on the App Store. Why does the address change every few minutes? That is iOS, not the app. Apple rotates the identifier it shows you for privacy, so the same device can appear under different addresses. Does it work on iPad? Yes. Terms of Use: https://masaapps360.com/periphery/terms/ Privacy Policy: https://masaapps360.com/periphery/privacy/

Screenshots

Write ID1 screens
Periphery4 screens

Verdict

The call

The clearest difference is in-app purchases: Write ID at none against Periphery's 4. Write ID also leads on ads (none vs shown) and iOS requirement (9.0 vs 17.0). Periphery's advantage is update cadence (weekly vs every 6 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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Periphery sells 4 in-app purchases, starting at $0.99 per 7 days. Write ID asks for nothing beyond the download.

UpkeepUpdate frequency

Write ID ships an update every 6 weeks, Periphery weekly. The most recent releases landed on October 25, 2026 and October 29, 2026 respectively.

Scorecard4 real differences ยท 2 level
Write ID versus Periphery: the parameters behind the verdict, then further details
ParameterWrite IDPeriphery
PriceFreeFree
Update frequencyEvery 6 weeksWeekly โ€” better
AdsNo โ€” betterYes
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPodiPhone, iPad
Requires iOS9.0 โ€” better17.0
Further details โ€” not scored
Size1 MB6 MB
Age rating9+4+
DeveloperShenzhen Chileaf Eletronics Co., LTDGrima Hdez

In-app purchases

None

Write ID

No in-app purchases

4 purchases

Periphery

Subscriptions3
  • Periphery Pro Weekly$0.997 Days
  • Periphery Pro Monthly$1.991 Month
  • Periphery Pro Yearly$2.991 Year
One-time1
  • Periphery Pro Lifetime$3.99

Questions

Is Write ID free?
Write ID is free to download, with no in-app purchases.
Is Periphery free?
Periphery is free to download, with in-app purchases available.
Do Write ID or Periphery have ads?
Periphery shows ads; Write ID does not.
Which is updated more often, Write ID or Periphery?
Write ID ships an update every 6 weeks, and Periphery weekly. Most recently, Write ID was updated on October 25, 2026 and Periphery on October 29, 2026.

Other comparisons