# TEMS™ OnDevice vs BlueSpy

The clearest difference is in-app purchases: TEMS™ OnDevice at none against BlueSpy's 7. TEMS™ OnDevice also leads on update cadence (every 6 months vs every 17 months) and iOS requirement (14.0 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. BlueSpy sells 7 in-app purchases, starting at $0.99 per month. TEMS™ OnDevice asks for nothing beyond the download.

TEMS™ OnDevice ships an update every 6 months, BlueSpy every 17 months. The most recent releases landed on October 6, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | TEMS™ OnDevice | BlueSpy |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 6 months** | Every 17 months |
| Monetization | — | Free with in-app purchases |
| Size | 9 MB | 849 MB |
| Requires iOS | **14.0** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [InfoVista](https://appshunter.io/developer/417612552) | [Giuseppe Mazzilli](https://appshunter.io/developer/1593372985) |

## What reviewers say

### TEMS™ OnDevice

[App page](https://appshunter.io/ios/app/tems-ondevice/id1548649639)

**Features:** macOS Compatibility

**In-app purchases:** none


### BlueSpy

[App page](https://appshunter.io/ios/app/bluespy/id6451215731)

This tool allows you to inspect, read, and write data with Bluetooth Low Energy devices. Explore device capabilities, analyze behavior, and understand security levels through real-time scanning and interactive features.

**Highlights:** Scan nearby BLE devices in real-time, Sort and filter peripherals, Identify device types and models, Read and write peripheral data, Explore communication logs, Configure custom settings

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Bronze Membership | $0.99 | per month |
| Gold Membership | $3.99 | per month |
| Platinum Membership | $4.99 | per month |
| Characteristic Write Feature | $0.99 | one-time |
| 1-Year Subscription | $3.99 | one-time |
| 2-Year Subscription | $6.99 | one-time |
| 3-Year Subscription | $8.99 | one-time |


## Frequently asked questions

### Is TEMS™ OnDevice free?

TEMS™ OnDevice is free to download, with no in-app purchases.

### Is BlueSpy free?

BlueSpy is free to download, with in-app purchases available.

### Do TEMS™ OnDevice or BlueSpy have ads?

Neither TEMS™ OnDevice nor BlueSpy shows ads.

### Which is updated more often, TEMS™ OnDevice or BlueSpy?

TEMS™ OnDevice ships an update every 6 months, and BlueSpy every 17 months. Most recently, TEMS™ OnDevice was updated on October 6, 2026 and BlueSpy on October 11, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*