WaitIO vs OmniUnits
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
WaitIO
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WaitIO helps you measure and track real waiting time. Find out how long it truly takes to wait for a meeting, celebration, event, or any anticipated moment. Create a moment, let time run, and get notified when the wait is over. WaitIO is built for speed and simplicity. No accounts. No clutter. Just time. What you can do with WaitIO: • Create a moment in one tap • Track waiting time precisely • Receive notifications when a moment ends • Manage your moments • View your full waiting history • Use the app fully offline Whether you’re tracking delays or counting down to something important, WaitIO keeps waiting clear and effortless.
OmniUnits
This app streamlines unit conversions with custom presets, a formula editor, and a widget-first approach. It supports over 35 unit categories and offers professional precision for calculations. Ideal for professionals and students needing quick, structured conversions.
- Customizable conversion presets
- Built-in formula editor
- Widget-first home screen access
- 35+ unit categories
- Professional precision controls
- Conversion history
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Convert faster. Search less. Get more done. OmniUnits is the unit converter that adapts to your workflow – not the other way around. Instead of endless lists and table-scrolling, you get structured, reusable conversion setups saved as presets and launched directly from your home screen via widgets. WHY OMNIUNITS? Custom Presets: Combine multiple units and categories into a single preset. Perfect for recurring tasks – whether 3D printing, lab measurements, or construction. Build Your Own Formulas: The built-in formula editor handles complex expressions like l*π*pow(d/2;2)*ρ/1000. Define variables, choose units, and calculate instantly – no separate calculator needed. Widget-First Approach: Configure widgets with your presets, favorite categories, or formulas. One tap from the home screen – and you’re right where you need to be. 35+ Unit Categories: From length, mass, and temperature to pressure, torque, and flow rate – all the way to magnetic fields, radioactivity, and currencies. Professional Precision: Control decimal places, scientific notation, and rounding – exactly how you need it. Conversion History: All calculations are saved and easy to look up. Full VoiceOver Support: OmniUnits is completely accessible. WHO IS OMNIUNITS FOR? Engineers & technicians who work with different unit systems daily. Students & scientists who need quick formula evaluation. Construction workers who need on-site conversions. Anyone who needs a reliable, fast conversion tool in everyday life. OmniUnits is free to use (limited amount of conversions per month). Unlock unlimited conversions, more presets, widgets, and formulas with OmniUnits Pro. Download OmniUnits now and experience unit conversion the way it should be: fast, structured, to the point.
Screenshots
Verdict
The clearest difference is in-app purchases: WaitIO at none against OmniUnits's 3. On price 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
Both are free to download. OmniUnits sells 3 one-off in-app purchases. WaitIO asks for nothing beyond the download.
| Parameter | WaitIO | OmniUnits |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 3 weeks | — |
| Ads | No | — |
| In-app purchases | No — better | Yes |
| Monetization | — | Freemium |
| Devices | iPhone — better | — |
| Requires iOS | 17.5 — better | 18.0 |
| Further details — not scored | ||
| Size | 1 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Nerdz | Florian Lenk |
In-app purchases
WaitIO
No in-app purchases
OmniUnits
- OmniUnits Plus$1.99
- OmniUnits Pro$2.99
- OmniUnits Pro$3.99









