Personal Formulator vs FlatPrice
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Personal Formulator
This app offers a comprehensive suite of nearly 30 personal calculation tools, including financial planning, loan amortization, and unit conversions. It helps users understand discounts, manage car payments, and track savings goals. Users can also save preferred formulas and create custom lists for easy access.
- Nearly 30 personal calculation formulas
- Financial goal tracking
- Loan and mortgage calculations
- Multiple discount analysis
- Unit and cooking conversions
- Save and organize preferred formulas
- Formula charting options
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PERSONAL FORMULATOR (PFormulator) is the only tool you need for personal calculations. With nearly 30 formulas PFormulator will calculate your tips and how much a new purchase will increase your minimuim credit card purchase. In this day of wild sales, it will tell you the true meaning of multiple discounts. PERSONAL FORMULATOR includes: formulas for calculating car payments, mortgages as well as, how much you must save to reach a specific financial goal. The app also includes conversion formulas for many daily needs: such as miles to Kilometers, or meters to feet... cooking conversion formulas that convert tablespoons to milliliters or ounces to grams... tip calculations, car loans, insurance reimbursements, and monthly car loans. All formulas can be saved for future reference. A number of the formulas include charting as an option. In addition, you can create your own list of preferred formulas. PFormulator is a great formula calculator!
FlatPrice
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FlatPrice is a professional cargo calculator for physical oil and petroleum trading. Calculate flat prices from benchmark + differential in any price unit. Convert quantities between MT, barrels, m³, gallons, and long tons with ASTM volume correction factors. Estimate voyage transit times between major oil ports. Convert cargo values to any currency with live FX rates. Features: Cargo Calculator • Flat price from benchmark + differential in $/bbl, $/MT, $/m³, ¢/gal, $/L • Cargo valuation with differential impact breakdown • Quantity conversion: MT, LT, bbl, gal, liters, GSV/GOV (m³) • ASTM Table 54A/B/C/D volume corrections (VCF) • Temperature corrections, buoyancy factors, air vs vacuum weight • API gravity, density at 15°C/20°C, thermal expansion Market Compare • Side-by-side port comparison with landed cost analysis • Price differentials, spread tracking, and ratio analysis • WTI benchmark tracking with crack spread • Price prediction with linear regression model • Interactive price history chart with 30/90/1Y views • Per-port daily price history saved automatically Quick Converter • Standalone unit converter with instant results • Supports MT, LT, bbl, gal, liters, GSV/GOV Voyage Estimate • Transit times for major oil ports worldwide • Suez, Panama, and Cape routes with alternatives • Configurable vessel speed presets FX Rates • Live exchange rates with currency converter iPad Dashboard • Every tool on one screen in a modular grid • Rearrange, resize, and collapse modules to fit your workflow • Layout saved automatically, with a guided tour to get started — FlatPrice is free during launch. A paid subscription will be introduced in a future update — you'll be notified in advance before any charges apply. Terms of Use: https://www.flatprice.app/terms.html Privacy Policy: https://www.flatprice.app/privacy.html
Screenshots
Verdict
The clearest difference is update cadence: FlatPrice at monthly against Personal Formulator's every 3 months. FlatPrice also leads on iOS requirement (15.1 vs 18.6). On price, 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
Both are free to download. Personal Formulator sells 1 one-off in-app purchase and FlatPrice sells 1 in-app purchase, starting at $17.99 per month. Whichever you choose, the download price is not the number that matters.
Personal Formulator ships an update every 3 months, FlatPrice monthly. The most recent releases landed on October 6, 2026 and October 17, 2026 respectively.
| Parameter | Personal Formulator | FlatPrice |
|---|---|---|
| Price | Free | Free |
| Rating | 2.0 (1 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 3 months | Monthly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 18.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 19 MB | 43 MB |
| Age rating | 4+ | 4+ |
| Developer | Historycentral.com | Bruno Maestrini |
In-app purchases
Personal Formulator
- Premium$0.99
FlatPrice
- FlatPrice6 Months trial$17.991 Month
Questions
Is Personal Formulator free?
Is FlatPrice free?
Do Personal Formulator or FlatPrice have ads?
Which is updated more often, Personal Formulator or FlatPrice?
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