FOREWARN vs Rent Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
FOREWARN
This app provides instant due diligence on prospects, enabling users to verify identities, identify criminal history, and assess financial risks. It helps users plan for in-person interactions with greater confidence and proactively address potential risks.
- Instant due diligence
- Prospect identification/verification
- Criminal history identification
- Asset ownership verification
- Financial risk assessment
- Safe interaction planning
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Note: You must have a current FOREWARN® account to utilize this app. SAFER ENGAGEMENTS. SMARTER INTERACTION. Download the FOREWARN app for instant due diligence: • Positively identify/verify over 80% of prospects • Identify if your prospect has a criminal history • Verify current asset ownership • Verify financial risks • PROPERLY AND SAFELY PLAN FOR IN PERSON INTERACTIONS WITH A HIGHER LEVEL OF CONFIDENCE It’s time to proactively address risk! FOREWARN, LLC (“FOREWARN”) is not a “consumer reporting agency” and its services do not constitute “consumer reports”, as these terms are defined by the Fair Credit Reporting Act, 15 U.S.C. § 1681 et seq. (“FCRA”) or similar state statutes. Accordingly, FOREWARN services may not be used in whole or in part as a factor in establishing an individual’s eligibility for credit, insurance, employment, or any other eligibility purpose permitted by the FCRA. FOREWARN and related marks are trademarks of FOREWARN, LLC.
Rent Calculator
This app provides landlords, property managers, and tenants with six specialized calculators to accurately determine prorated rent, late fees, security deposit interest, and rent increases. It includes built-in state law guidance for all 50 states and DC, along with property and lease management features and smart alerts.
- Rent Proration Calculator (Actual Days, Banker's Month, Annual Rate)
- Affordability Calculator (3x Monthly, 40x Annual, HUD 30%)
- Late Fee Calculator (Flat, Percentage, Grace Periods)
- Security Deposit Interest Calculator
- Rent Increase Calculator (State Caps, CPI Data)
- Utility Split Calculator (Equal, Square Footage, Occupant)
- Property and Lease Management
- Smart Alerts for Lease Expirations and Deadlines
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Prorate Calculator Pro is now Rent Calculator: Lease Tracker, the landlord rent calculator and lease tracker that answers the questions every rental raises, with the state law behind each number, for all 50 states plus DC. SIX CALCULATORS, ONE STATE-LAW ENGINE PRORATED RENT: How much rent is due for a partial month? Enter the rent and the move-in or move-out date. Get the daily rate and prorated amount by Actual Days, Banker's Month (30-day), or Annual Rate, side by side, with your state's preferred method flagged. LATE FEE: What late fee can I legally charge? Flat or percentage fees checked against your state's grace period and fee cap, so the amount on the notice is the amount the law allows. SECURITY DEPOSIT INTEREST: How much interest do I owe on a deposit, and when is the return deadline? State and city interest rates (including Chicago, San Francisco, and Los Angeles) and the security deposit return deadline counted from move-out. RENT INCREASE: How much can I raise the rent? Proposed increases checked against state rent caps, with live CPI for California, Oregon, DC, and more. Notice periods flagged before you send the rent increase letter. AFFORDABILITY: How much rent can a tenant afford? The 3x monthly, 40x annual, and HUD 30% rent-to-income rules, in both directions (income to rent, rent to income), for tenant screening. UTILITY SPLIT: How do I split a utility bill between units or roommates? Equal, square footage, occupant, or hybrid (RUBS) methods with a per-unit breakdown you can share. LEASE TRACKER Properties, tenants, and leases in one place: lease status, days remaining, deposits, and move-in/move-out photo documentation. Open any calculator from a lease and the numbers are pre-filled. ALERTS THAT KEEP YOU COMPLIANT Lease expiration at 90, 60, and 30 days. Rent due reminders. Security deposit return deadlines. Rent increase notice windows. Home Screen and Lock Screen widgets show the next date at a glance. STATE LAW, CITED Every calculation shows the statute behind it, such as Cal. Civ. Code § 1950.5, not a blog post. General guidance, not legal advice. AI INSIGHTS, ON DEVICE Your upcoming lease events ranked by urgency with plain-language next steps. Nothing leaves your phone. FREE TO TRY, THEN PREMIUM Your first 3 calculations are free on any calculator, with full state citations. Premium unlocks unlimited calculations, the lease tracker, alerts and widgets, iCloud sync, and AI insights: monthly, annual with a 7-day free trial, or a one-time lifetime purchase. Questions or feedback? Use Send Feedback in Settings (replies land in the app) or email support@iroiro.us Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://iroiro.us/pages/privacy-policy.html
Screenshots
Verdict
The clearest difference is in-app purchases: FOREWARN at none against Rent Calculator's 4. FOREWARN also leads on ratings volume (29K vs 5) and iOS requirement (15.1 vs 17.0). Rent Calculator's advantage is review sentiment (100% vs 78%). On price, rating, update cadence and ads 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. Rent Calculator sells 4 in-app purchases, starting at $2.99 per month. FOREWARN asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.9 for FOREWARN against 5.0 for Rent Calculator. That said, the two scores are not equally well evidenced: FOREWARN has 29K ratings behind it against 5, so its average is the more settled of the two. Written reviews are what separate them: 78% of FOREWARN's written reviews are positive against 100% of Rent Calculator's.
FOREWARN ships an update every 5 weeks, Rent Calculator every 2 months. The most recent releases landed on November 5, 2026 and November 2, 2026 respectively.
| Parameter | FOREWARN | Rent Calculator |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (29K ratings) | 5.0 (5 ratings) — better |
| Positive reviews | 77.6% of reviews | 100.0% of reviews — better |
| Number of ratings | 29K — better | 5 |
| Update frequency | Every 5 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.1 — better | 17.0 |
| Further details — not scored | ||
| Size | 30 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Forewarn LLC | IROIRO LLC |
Customer experience
FOREWARN
Rent Calculator
Bugs and requests
FOREWARN
Reported bugs
2 issues- App crashes or becomes unavailable
- Login and account setup issues
Requested features
3 requests- Ability to directly call from the app
- Improved accuracy and data reliability
- More flexible subscription options
Rent Calculator
Not enough reviews yet to summarise bugs or requests.
In-app purchases
FOREWARN
No in-app purchases
Rent Calculator
- Premium - Monthly$2.991 Month
- Premium - Annual7 Days trial$19.991 Year
- Premium - Lifetime [Loyalty Price]$39.99
- Premium - Lifetime$49.99
Questions
Is FOREWARN free?
Is Rent Calculator free?
Which has better reviews, FOREWARN or Rent Calculator?
Do FOREWARN or Rent Calculator have ads?
Which is updated more often, FOREWARN or Rent Calculator?
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