# Architect's Formulator vs FollowUp..

The clearest difference is rating: FollowUp.. at 5.0 against Architect's Formulator's 2.0. FollowUp.. also leads on in-app purchases (none vs 1) and update cadence (weekly vs every 2 months). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Architect's Formulator sells 1 one-off in-app purchase. FollowUp.. asks for nothing beyond the download.

FollowUp.. holds the better App Store score, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

Architect's Formulator ships an update every 2 months, FollowUp.. weekly. The most recent releases landed on October 6, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Architect's Formulator | FollowUp.. |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (2 ratings)](https://appshunter.io/ios/app/architects-formulator/id310925486/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/followup/id6779986808/reviews)** |
| Number of ratings | **2** | 1 |
| Positive reviews | 20.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Paid | **Free** |
| Size | 37 MB | 16 MB |
| Requires iOS | 18.6 | **17.0** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Historycentral.com](https://appshunter.io/developer/1744330560) | [Ahmad Al-Sabbagh](https://appshunter.io/developer/1564333661) |

## What reviewers say

### Architect's Formulator

[App page](https://appshunter.io/ios/app/architects-formulator/id310925486)

A comprehensive professional calculator for architects, engineers, and construction professionals. It offers over 2,000 formulas across structural, electrical, mechanical, plumbing, and carpentry disciplines, along with unit conversions and reference tables.

**Highlights:** Over 2,000 professional formulas, US and Metric unit conversions, Save and export calculations, Favorite frequently used calculators, Reference tables and ADA guidelines

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Version | $5.99 | one-time |


### FollowUp..

[App page](https://appshunter.io/ios/app/followup/id6779986808)

This app helps healthcare professionals manage patient follow-up, appointments, and clinical events. It offers tools for organizing patient timelines, treatment plans, and communication, with a strong focus on privacy and local data management.

**Highlights:** Organize patient follow-up, Patient Timeline of clinical events, Schedule appointments, Track diagnoses and treatment plans, Contact patients via phone/WhatsApp, Customizable completion messages, Local data backup and restore

**In-app purchases:** none


## Frequently asked questions

### Is Architect's Formulator free?

Architect's Formulator is free to download, with in-app purchases available.

### Is FollowUp.. free?

FollowUp.. is free to download, with no in-app purchases.

### Which has better reviews, Architect's Formulator or FollowUp..?

FollowUp.. is rated higher. Architect's Formulator averages 2.0 out of 5 from 2 ratings, while FollowUp.. averages 5.0 from 1 ratings.

### Do Architect's Formulator or FollowUp.. have ads?

Neither Architect's Formulator nor FollowUp.. shows ads.

### Which is updated more often, Architect's Formulator or FollowUp..?

Architect's Formulator ships an update every 2 months, and FollowUp.. weekly. Most recently, Architect's Formulator was updated on October 6, 2026 and FollowUp.. on October 5, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*