# NormalClock vs TruAirspeed

The clearest difference is price: TruAirspeed at Free against NormalClock's $0.99. TruAirspeed also leads on rating (4.1 vs 1.0) and review sentiment (71% vs 50%). NormalClock's advantage is update cadence (every 10 months vs every 24 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

TruAirspeed is free to download; NormalClock costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

TruAirspeed holds the better App Store score, 4.1 against 1.0. That said, the two scores are not equally well evidenced: TruAirspeed has 8 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 50% of NormalClock's written reviews are positive against 71% of TruAirspeed's.

NormalClock ships an update every 10 months, TruAirspeed every 24 months. The most recent releases landed on October 15, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | NormalClock | TruAirspeed |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/normalclock/id382249419/reviews) | **[4.1 (8 ratings)](https://appshunter.io/ios/app/truairspeed/id855269892/reviews)** |
| Number of ratings | 1 | **8** |
| Positive reviews | 50.0% of reviews | **71.4% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 10 months** | Every 24 months |
| Monetization | Paid | **Free** |
| Size | 3 MB | 8 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [r2r660cc](https://appshunter.io/developer/372976464) | [James Petty](https://appshunter.io/developer/603661046) |

## What reviewers say

### NormalClock

[App page](https://appshunter.io/ios/app/normalclock/id382249419)

This utility app functions as a basic clock with alarm features. It allows customization of alarm sounds using iPod library tunes and includes a screen burn-in prevention mechanism by slightly shifting the clock's position.

**Highlights:** Customizable alarm sounds, iPod library integration for alarm tunes, Screen burn-in prevention, Alarm on/off functionality, Alarm time setting

**In-app purchases:** none


### TruAirspeed

[App page](https://appshunter.io/ios/app/truairspeed/id855269892)

This utility calculates true airspeed, pressure altitude, density altitude, and Mach number. It accounts for compressibility effects and offers unit choices and keypad styles. Users can also input a correction factor for their airspeed indicator.

**Highlights:** True airspeed calculation, Pressure and density altitude calculation, Mach number calculation, Compressibility effects accounted for, Choice of input/result units, Calculator or telephone keypad options, Airspeed indicator correction factor

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is NormalClock free?

NormalClock costs $0.99, with no in-app purchases.

### Is TruAirspeed free?

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

### Which has better reviews, NormalClock or TruAirspeed?

TruAirspeed is rated higher. NormalClock averages 1.0 out of 5 from 1 ratings, while TruAirspeed averages 4.1 from 8 ratings.

### Do NormalClock or TruAirspeed have ads?

Neither NormalClock nor TruAirspeed shows ads.

### Which is updated more often, NormalClock or TruAirspeed?

NormalClock ships an update every 10 months, and TruAirspeed every 24 months. Most recently, NormalClock was updated on October 15, 2026 and TruAirspeed on October 2, 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.*