Comparison

RAYSID vs Periphery

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

Head to head
About

RAYSID

This app connects to a RAYSID gamma spectrometer via Bluetooth to display real-time radiation data. It offers detailed spectrum analysis, automatic isotope identification, and customizable device alarms. Data is stored locally on your phone.

Highlights
  • Real-time count rate and dose rate
  • Automatic isotope identification
  • High-resolution spectrum analysis
  • Device threshold alarms with notifications
  • Export spectrum data to N42 file
  • Phone-side Geiger clicks
Features
Read full description

Raysid is the iOS companion app for the RAYSID CsI(Tl) gamma spectrometer. Connect to your RAYSID over Bluetooth and see radiation in real time: • Live count rate (CPS) and dose rate (µSv/h) • Accumulated dose and yearly projection • 33-bin coarse histogram for quick scanning • 1800-channel high-resolution spectrum with log or linear axis • Automatic isotope identification against a built-in library of 43 reference spectra (natural, medical, and industrial isotopes) • Device threshold alarms with phone notifications, sound, and haptic • Phone-side Geiger clicks through the speaker, AirPods, or car audio • Export the high-resolution spectrum as a standards-compliant N42 file • Local radiation map: record your readings geotagged to where you took them, view them by count rate or dose, with an optional community layer. Recorded only while the app is open; your map stays on your device. You'll need a RAYSID device to use this app. Your measurements, location, and recorded map stay on your phone - nothing is uploaded. This app is an independent companion and is not affiliated with the RAYSID device manufacturer.

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 — 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 - Export scan logs for documentation and debugging - Offline UUID database — 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 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 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 The cleanest BLE inspector on the App Store. 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 — services, characteristics, descriptors — 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

RAYSID4 screens
Periphery4 screens

Verdict

The call

The clearest difference is in-app purchases: RAYSID at none against Periphery's 4. RAYSID also leads on ads (none vs shown) and update cadence (weekly vs every 3 weeks). On price, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Periphery sells 4 in-app purchases, starting at $6.99 per 7 days. RAYSID asks for nothing beyond the download.

UpkeepUpdate frequency

RAYSID ships an update weekly, Periphery every 3 weeks. The most recent releases landed on October 6, 2026 and October 7, 2026 respectively.

Scorecard3 real differences · 6 level
RAYSID versus Periphery: the parameters behind the verdict, then further details
ParameterRAYSIDPeriphery
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyWeekly — betterEvery 3 weeks
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhoneiPhone, iPad — better
Requires iOS16.0 — better17.0
Further details — not scored
Size145 MB5 MB
Age rating4+4+
DeveloperIsai OlveraGrima Hdez

In-app purchases

None

RAYSID

No in-app purchases

4 purchases

Periphery

Subscriptions3
  • Periphery Pro Weekly$6.997 Days
  • Periphery Pro Monthly$14.991 Month
  • Periphery Pro Yearly$39.991 Year
One-time1
  • Periphery Pro Lifetime$79.99

Questions

Is RAYSID free?
RAYSID is free to download, with no in-app purchases.
Is Periphery free?
Periphery is free to download, with in-app purchases available.
Do RAYSID or Periphery have ads?
Periphery shows ads; RAYSID does not.
Which is updated more often, RAYSID or Periphery?
RAYSID ships an update weekly, and Periphery every 3 weeks. Most recently, RAYSID was updated on October 6, 2026 and Periphery on October 7, 2026.

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