Hold Calculator Pro vs Airbox
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Hold Calculator Pro
Master timed holding patterns in aviation with this app. It simplifies complex calculations for instrument students, providing visual aids for joining processes, wind correction angles, and recommended headings. Utilize device GPS for real-time wind data.
- Timed holding pattern mastery
- Wind correction angle calculation
- Recommended headings
- Visual joining process understanding
- In-flight instant wind calculation via GPS
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Master the 'dark art' of flying that timed holding pattern. Written by experienced instrument pilots and instructors Hold Calculator Pro will take the hard work out of the calculations. For the instrument student the hold can be extremely daunting - our visual output allows quick and simple understanding of the joining processes, calculation of Wind Correction Angle and recommended headings to fly in and outbound. Device GPS is can be used to calculate inflight instant wind to use when planning your hold.
Airbox
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Airbox situational awareness app. • Operate effectively with colleagues • Navigation • Information sharing • Map annotation.
Screenshots
Verdict
The clearest difference is price: Airbox at Free against Hold Calculator Pro's $1.99. Hold Calculator Pro's advantage is update cadence (every 3 days vs every 3 weeks) and chart position (#178 vs unranked). On ads, in-app purchases and device support 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
Airbox is free to download; Hold Calculator Pro costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Hold Calculator Pro ships an update every 3 days, Airbox every 3 weeks. The most recent releases landed on November 7, 2026 and November 3, 2026 respectively.
| Parameter | Hold Calculator Pro | Airbox |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 3.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 3 days — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Best chart rank | #178 — better | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 13.4 — better | 15.0 |
| Further details — not scored | ||
| Size | 1 MB | 570 MB |
| Age rating | 4+ | 4+ |
| Developer | Rob Barltrop | Airbox Systems Ltd |
In-app purchases
Hold Calculator Pro
No in-app purchases
Airbox
No in-app purchases
