Multinomial vs Bellows Design Software
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Multinomial
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This app computes binomial and multinomial (= polynomial) coefficients. The app runs now also on iPad.
Bellows Design Software
This application assists in designing metallic bellows type expansion joints according to EJMA Standards. It allows users to input various design parameters and movement inputs to ensure safe and reliable usage. The software performs comprehensive calculations and checks against EJMA conditions for different bellows configurations and materials.
- Design metallic bellows expansion joints
- Input internal diameter, convolution height, ply thickness, pitch, and number of plies
- Set design pressure, temperature, and movements
- Check design parameters against EJMA Standards
- Calculations for single and dual bellows
- Includes vibration and bellows forming methods
- Calculations for tie rods, lugs plate, and hinges
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Bellows Design Software is developed based on EJMA Standards 10th edition. Useful in designing Metallic Bellows type Expansion joints for safe and reliable usage. Select Internal Diameter of Bellows, Convolution Height, Ply thickness, Pitch and Number of Plies. Set Design Pressure and Temperature. Choose Bellows Materials, Input Axial, Lateral and Angular Movements. Include Collar, Spool and Cycle Life and GO. App checks the design parameters with all set of Conditions to be met as per EJMA Standard. Calculations include Single, Dual Bellows with over a long list of Materials. Other Features : Includes Vibration, Bellows Forming Methods - ( in the creep range, above the creep range ) Calculations for Annealed Bellows. Set Factors - Weld Factor, Fatigue Safety Factor and Forming Method Factor Set Constants for Axial Vibration and Lateral Vibration. Separate Calculations for Tie Rods, Lugs Plate and Hinges are included. Terms of Use : https://sites.google.com/view/bellowsdesignsoftware Privacy Policy : https://sites.google.com/view/bellowsdesignsoftware
Screenshots
Verdict
The clearest difference is in-app purchases: Multinomial at none against Bellows Design Software's 2. Bellows Design Software's advantage is update cadence (monthly vs every 47 months) and iOS requirement (16.0 vs 18.6). On price, ads 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. Bellows Design Software sells 2 in-app purchases, starting at $34.99 per month. Multinomial asks for nothing beyond the download.
Multinomial ships an update every 47 months, Bellows Design Software monthly. The most recent releases landed on September 18, 2026 and September 15, 2026 respectively.
| Parameter | Multinomial | Bellows Design Software |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 47 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad, Mac — better |
| Requires iOS | 18.6 | 16.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 26 MB |
| Age rating | 4+ | 4+ |
| Developer | Reinhard MAENNER | V PUGAZHENTHI |
In-app purchases
Multinomial
No in-app purchases
Bellows Design Software
- All Access for Bellows3 Days trial$34.991 Month
- All Access for Bellows Design14 Days trial$299.991 Year
Questions
Is Multinomial free?
Is Bellows Design Software free?
Do Multinomial or Bellows Design Software have ads?
Which is updated more often, Multinomial or Bellows Design Software?
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