Architect's Formulator vs FollowUp..
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Architect's Formulator
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.
- Over 2,000 professional formulas
- US and Metric unit conversions
- Save and export calculations
- Favorite frequently used calculators
- Reference tables and ADA guidelines
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ARCHITECT'S FORMULATOR is the ultimate professional calculator for architects, engineers, and construction professionals — with over 2,000 formulas in a single app. Whether you're sizing beams, designing HVAC systems, calculating voltage drops, or checking ADA compliance, Architect's Formulator covers every discipline — structural, electrical, mechanical, plumbing, and carpentry — plus unit conversions, reference tables, and ADA accessibility resources. ARCHITECTURE & STRUCTURAL — 29 categories covering beam loads across single through four continuous spans, concrete design, flat plate analysis, steel design, masonry, environmental loads (wind, snow, seismic), foundation and retaining walls, wood design, acoustic absorption, 100+ material weights, fire egress, roof drainage, solar/daylighting, thermal performance, site grading, cost estimating, and more. ELECTRICAL — 15 categories for AC/DC circuits, Ohm's Law, motors, transformers, voltage drop, wiring/conduit sizing, batteries, impedance, power demand, lighting design, UPS sizing, and operating costs. CARPENTRY — 8 categories for lumber, stairs, safe beam loads, wall loads, roofing (shed, gable, hip), railing/deck framing, crown molding, and materials estimation for drywall, concrete, paint, and plywood. PLUMBING & HVAC — 29 categories covering pipe sizing, water flow, pumps, boilers, and a comprehensive HVAC library including airside/waterside heat transfer, duct sizing, fan and pump laws, gas laws, psychrometrics, refrigeration, heating/cooling load design, energy content for 16 fuel types, ventilation rates per ASHRAE 62.1, and steam/hydronic systems. CONVERSIONS — 17 categories with 500+ conversions for pressures, flows, BTU, horsepower, watts, frequency, linear/liquid/square/cubic measures, weights, and a Metric library with 280+ conversions across length, area, volume, mass, energy, power, and more. TEMPERATURE SCALES — Convert between all 8 scales: Celsius, Fahrenheit, Kelvin, Rankine, Réaumur, Newton, Delisle, and Rømer. REFERENCE TABLES — IBC Occupancy Loads, Brick Sizes, Lumber Dimensions, AWG Wire Gauge, Concrete Mix Ratios, and Insulation R-Values. ADA REFERENCE — 50 illustrated diagrams for wheelchair clearances, ramps, grab bars, elevators, accessible parking, and restroom layouts, plus 17 PDF documents with full ADA guidelines. FEATURES: • Over 2,000 professional formulas • US and Metric units with one-tap switching • Save and export calculations • Favorite your most-used calculators • One-time premium upgrade — no subscriptions From foundation to finish, every formula for every phase of the job.
FollowUp..
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.
- 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
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FollowUp is a clinical organization and patient follow-up app designed for healthcare professionals who need a simple, structured way to manage ongoing patient care. Keep patient follow-up information, appointments, reminders, clinical events, treatment plans, and communication tools together in one focused workflow. KEY FEATURES • Organize active and completed patient follow-up. • Maintain a clear Patient Timeline of important clinical events. • Schedule single or repeating follow-up appointments. • Track diagnoses and management plans using reusable libraries. • Build useful Libraries from information already entered into the app. • Search across patient and follow-up information. • Quickly contact patients by phone or WhatsApp. • Prepare customizable multilingual Completion Messages. • Use language-specific sender and facility names in patient communication. • Share Facility Information such as contact details and clinic hours. • Manage multiple practice locations and facility-specific information. • Create privacy-conscious Patient Share Cards for professional handover. • Protect Patient Share Cards with a user-defined Sharing Passcode. • Export and restore your FollowUp data using local backup files. • Customize the app’s appearance, home screen, reminders, and workflow. PRIVACY-FIRST FollowUp is designed as a local-first clinical organization tool. It is not a replacement for your healthcare facility’s official medical record and is not designed to disclose, publish, or share a patient’s private or medical information. Patient information should always be limited to what is necessary for clinical follow-up and handled according to your healthcare facility’s policies and applicable privacy and professional requirements. FollowUp does not require patient accounts and does not automatically send patient information. Sharing and communication actions are deliberately initiated by the healthcare professional. Designed to help make clinical follow-up clearer, more organized, and easier to manage.
Screenshots
Verdict
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.
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. 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.
| Parameter | Architect's Formulator | FollowUp.. |
|---|---|---|
| Price | Free | Free |
| Rating | 2.0 (2 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 20.0% of reviews | — |
| Number of ratings | 2 — better | 1 |
| Update frequency | Every 2 months | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, Mac — better | iPhone, iPad |
| Requires iOS | 18.6 | 17.0 — better |
| Further details — not scored | ||
| Size | 37 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | Historycentral.com | Ahmad Al-Sabbagh |
Customer experience
Architect's Formulator
FollowUp..
In-app purchases
Architect's Formulator
- Pro Version$5.99
FollowUp..
No in-app purchases




