Stoltz Calc vs BASA Gliders
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Stoltz Calc
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Soil Stabilization and Stoltz Site Spreader calibration calculators.
BASA Gliders
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The app includes a Weight & Balance calculator for gliders in the BASA club. The calculator determines whether the loading is within the allowed C.G. limits for the glider. Additionally, it displays all relevant information, such as tow speeds, limiting speeds, stall speeds for actual and reference mass, warnings, tire pressure, etc.
Screenshots
Verdict
The clearest difference is update cadence: BASA Gliders at every 2 months against Stoltz Calc's every 5 months. On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Stoltz Calc ships an update every 5 months, BASA Gliders every 2 months. The most recent releases landed on May 14, 2026 and September 10, 2026 respectively.
| Parameter | Stoltz Calc | BASA Gliders |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.6 | 16.6 — better |
| Further details — not scored | ||
| Size | 1 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Stoltz MFG., LLC. | Babu Srinivasan |
In-app purchases
Stoltz Calc
No in-app purchases
BASA Gliders
No in-app purchases
Questions
Is Stoltz Calc free?
Is BASA Gliders free?
Do Stoltz Calc or BASA Gliders have ads?
Which is updated more often, Stoltz Calc or BASA Gliders?
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