iePassManager vs Theta
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iePassManager
This utility app manages your FIDO security keys, offering a secure way to authenticate your identity across devices. It supports dual-interface keys for seamless connection to smartphones, PCs, and tablets.
- FIDO key management
- Identity authentication
- Dual interface support
- Cross-device compatibility
- High security smart card chip
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The new APP is Management tool for iePassFIDO. iePassFIDO is FEITIAN dual connector FIDO key.It is an identity authentication product designed by FEITIAN integrity based on its own research and development, which conforms to FIDO product specifications. It has a high security smart card chip, supports lightning and usb-c dual interfaces, and can be connected to smart phones, PCs and tablets.
Theta
This application measures the electrical resistance of objects when connected to compatible hardware via Bluetooth. It displays changes in resistance using a needle indicator, providing dynamic readings. The app is designed for informational purposes and is not for medical use.
- Bluetooth LE 4.0 connectivity
- Measures electrical resistance
- Needle indicator for dynamics
- Compatible with e-meter hardware
- Supports watch, iPhone, and iPod
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Theta-Meter e-meter app. Theta-Meter e-meter hardware can be connected to this app using Bleutooth LE 4.0 (or higher). This app measure electric resistence of the object, connected to Theta-Meter e-meter electrodes. This app is not intended to diagnose, treat, cure, or prevent any disease or medical or therapeutic use. Using needle indicator, this app shows the dynamics of changes in the electrical resistance of an object connected to the Theta-Meter device.
Screenshots
Verdict
The clearest difference is review sentiment: Theta at 100% against iePassManager's 33%. iePassManager's advantage is update cadence (every 3 months vs every 19 months) and iOS requirement (10.0 vs 13.0). On price, ads, in-app purchases and monetization model 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
iePassManager ships an update every 3 months, Theta every 19 months. The most recent releases landed on October 16, 2026 and October 3, 2026 respectively.
| Parameter | iePassManager | Theta |
|---|---|---|
| Price | Free | Free |
| Rating | 2.3 (4 ratings) — better | — |
| Positive reviews | 33.3% of reviews | 100.0% of reviews — better |
| Number of ratings | 4 — better | — |
| Update frequency | Every 3 months — better | Every 19 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPod, Apple Watch |
| Requires iOS | 10.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 1 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | FEITIAN Technologies Co.,Ltd. | Mikhail Fedorov |
Customer experience
iePassManager
Theta
In-app purchases
iePassManager
No in-app purchases
Theta
No in-app purchases
