# AdPreviewer vs TEMGO

The clearest difference is rating: AdPreviewer at 5.0 against TEMGO's 4.0. TEMGO's advantage is update cadence (every 3 weeks vs every 14 months) and iOS requirement (13.0 vs 15.6). On price, review sentiment, ratings volume and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

AdPreviewer holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 2 and 3 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

AdPreviewer ships an update every 14 months, TEMGO every 3 weeks. The most recent releases landed on October 17, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | AdPreviewer | TEMGO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/adpreviewer/id949612320/reviews)** | [4.0 (3 ratings)](https://appshunter.io/ios/app/temgo/id6483105426/reviews) |
| Number of ratings | 2 | **3** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 11 MB | 31 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [FreeWheel Media Inc.](https://appshunter.io/developer/949612319) | [Shenzhen Guri New Energy](https://appshunter.io/developer/1748705940) |

## What reviewers say

### AdPreviewer

[App page](https://appshunter.io/ios/app/adpreviewer/id949612320)

This tool allows users to preview ads rendered by the FreeWheel iOS AdManager. It functions as a player for FreeWheel ad responses, enabling verification of composed or captured ad content.

**Highlights:** Ad playback integration, FreeWheel iOS AdManager support, Preview composed ad responses, Verify captured ad responses, Configurator tool integration

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

**In-app purchases:** none


### TEMGO

[App page](https://appshunter.io/ios/app/temgo/id6483105426)

Monitor your battery's real-time performance, including voltage, current, and internal resistance. Track historical data, compare individual cell performance, and receive alerts for critical temperature and voltage conditions. This system helps optimize battery health and lifespan.

**Highlights:** Real-time voltage, current, and power display, Historical data charting, Individual cell comparison and balancing, Temperature and voltage alarms, Fault reporting function

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

**In-app purchases:** none


## Frequently asked questions

### Is AdPreviewer free?

AdPreviewer is free to download, with no in-app purchases.

### Is TEMGO free?

TEMGO is free to download, with no in-app purchases.

### Which has better reviews, AdPreviewer or TEMGO?

AdPreviewer is rated higher. AdPreviewer averages 5.0 out of 5 from 2 ratings, while TEMGO averages 4.0 from 3 ratings.

### Do AdPreviewer or TEMGO have ads?

Neither AdPreviewer nor TEMGO shows ads.

### Which is updated more often, AdPreviewer or TEMGO?

AdPreviewer ships an update every 14 months, and TEMGO every 3 weeks. Most recently, AdPreviewer was updated on October 17, 2026 and TEMGO on October 14, 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.*