Interpolation 1.4 vs Wader Pilot Logbook
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Interpolation 1.4
This utility calculates linear or quadratic interpolations. It provides a straightforward tool for mathematical estimations based on given data points.
- Linear interpolation calculation
- Quadratic interpolation calculation
- Mathematical estimation tool
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** INTERPOLATION ** Interpolation is used to calculate a linear or a quadratic interpolation.
Wader Pilot Logbook
This app simplifies flight logging for pilots, offering an all-in-one solution to track flight hours and access essential information like weather reports. Cloud syncing ensures your records are always safe and accessible from anywhere, fostering a professional aviation network.
- Flight hour monitoring
- Integrated weather reports
- Cloud syncing for data backup
- Professional aviation network
- Accessible from anywhere
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The logbook that finally got it right. Wader is the digital logbook built for every pilot — student, GA, or airline. Beautiful interface, fast data entry, live airport data, and a growing pilot community, all in one place. LOG EVERY FLIGHT, EFFORTLESSLY Fast sector logging — crew, aircraft, airports, times, and remarks in seconds Import years of previous logbook data — easily done inside the app WORKS ANYWHERE, LOSES NOTHING Offline-first — fully functional at any aerodrome, no signal needed Cloud-synced and backed up automatically when you reconnect Export to CSV or PDF anytime, in formats pilots and employers use AIRPORT DATA IN YOUR POCKET Live METARs, TAFs, and statistical airport information Built for preflight planning and post-flight review A PILOT COMMUNITY WORTH JOINING Share flights and build a professional profile beyond a PDF logbook Stay current with aviation news and alert updates in the community feed Your entire flying journey, in your pocket. Download Wader today. Wader Aviation Corp is not liable for any resulting damage caused by using this application. Data is provided without guarantee as to accuracy. Weather data is sourced from third-party providers — always verify with official sources. Learn more at waderaviation.com/terms-of-use
Screenshots
Verdict
The clearest difference is review sentiment: Wader Pilot Logbook at 98% against Interpolation 1.4's 33%. Wader Pilot Logbook also leads on rating (4.6 vs 3.5) and ratings volume (22 vs 6). Interpolation 1.4's advantage is in-app purchases (none vs 1) and iOS requirement (9.0 vs 16.0). On price, update cadence, ads 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. Wader Pilot Logbook sells 1 in-app purchase, starting at $79.99 per year. Interpolation 1.4 asks for nothing beyond the download.
Wader Pilot Logbook holds the better App Store score, 4.6 against 3.5. Both are backed by a comparable volume of ratings — 6 and 22 respectively. Written reviews point the same way: 33% of Interpolation 1.4's written reviews are positive against 98% of Wader Pilot Logbook's.
Interpolation 1.4 ships an update every 3 weeks, Wader Pilot Logbook every 2 weeks. The most recent releases landed on October 4, 2026 and October 18, 2026 respectively.
| Parameter | Interpolation 1.4 | Wader Pilot Logbook |
|---|---|---|
| Price | Free | Free |
| Rating | 3.5 (6 ratings) | 4.6 (22 ratings) — better |
| Positive reviews | 33.3% of reviews | 98.1% of reviews — better |
| Number of ratings | 6 | 22 — better |
| Update frequency | Every 3 weeks | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 9.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 1 MB | 94 MB |
| Age rating | 4+ | 4+ |
| Developer | ZOFTERM | Wader Aviation Corp |
Customer experience
Interpolation 1.4
Wader Pilot Logbook
In-app purchases
Interpolation 1.4
No in-app purchases
Wader Pilot Logbook
- Wader Pro Annual$79.991 Year
Questions
Is Interpolation 1.4 free?
Is Wader Pilot Logbook free?
Which has better reviews, Interpolation 1.4 or Wader Pilot Logbook?
Do Interpolation 1.4 or Wader Pilot Logbook have ads?
Which is updated more often, Interpolation 1.4 or Wader Pilot Logbook?
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