A vs SimTunnel Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
A
This application simplifies the design of RC beams, offering detailed calculation steps for confidence in results. It initially supports ACI 318 building codes in US and Metric units, with plans to add more design codes.
- Simplified RC beam design
- Detailed calculation steps
- ACI 318 Building Code support
- US and Metric units
- Future design code additions
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The A-Beam+ is the extension of the previous A-Beam app that make the design of the RC beam easy and as simple as using the normal calculator. But behind the simplicity the app also provide the very details of the calculation in every step to make you confident with the calculation result. The initial version support for the "ACI 318" Building Code both US & Metric (SI-Metric and MKS-Metric) units with more other design codes will be added.
SimTunnel Pro
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SimTunnel Pro is designed to perform a quick tunnel analysis on your phone device. SimTunnel Pro is very simple and easy to use. SimTunnel Pro uses "rock-support interaction" or "convergence-confinement" method to estimate the deformation of circular tunnels in weak rock, and visualizing the tunnel interaction with various support systems. SimTunnel Pro has the following features: - SimTunnel Pro determines Factor of Safety (FOS) as the ratio of maximum support pressure to the support pressure required for equilibrium. - The Tunnel and Rock Parameters dialog allows you to define the tunnel and rock properties for model. - The Strength Properties which are required will depend on the strength criteria you have selected in Setting Page. - Both Mohr-Coulomb and Hoek-Brown strength criteria are available. - The parameter calculator dialogs are available to help you to calculate some of the parameters (i.e. GSI, mi, D, UCS, insitu stress and etc). - The support parameters dialog allows you to easily add support and define the support properties for the model. - Three different support types can be added to the model: Rockbolts, Steelsets and Shotcrete - The ground reaction curve (GRC) is always displayed in the output page. - The brief summary of analysis results and input data will be displayed in the Output Page. - The report button, allows you to save the current model’s input and output information into PDF file. The generated report file can be sent out via email.
Screenshots
Verdict
The clearest difference is update cadence: A at every 9 months against SimTunnel Pro's every 39 months. SimTunnel Pro's advantage is price ($1.99 vs $4.99) and iOS requirement (15.6 vs 18.6). 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
A costs $4.99 and SimTunnel Pro $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
A ships an update every 9 months, SimTunnel Pro every 39 months. The most recent releases landed on October 6, 2026 and October 12, 2026 respectively.
| Parameter | A | SimTunnel Pro |
|---|---|---|
| Price | $4.99 | $1.99 — better |
| Rating | 1.0 (2 ratings) — better | — |
| Positive reviews | 60.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 9 months — better | Every 39 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 18.6 | 15.6 — better |
| Further details — not scored | ||
| Size | 53 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Jutarus Ratanasethakul | Roozbeh Geraili Mikola |
In-app purchases
A
No in-app purchases
SimTunnel Pro
No in-app purchases
