Comparison

Invisor 401k vs Keep the Diff

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Invisor 401k

Manage your retirement savings on the go. Enroll in your plan, forecast income, monitor investments, and adjust contributions. Access financial learning resources and manage account settings securely.

Highlights
  • Retirement plan enrollment
  • Income forecast
  • Investment monitoring
  • Contribution adjustments
  • Financial learning center
  • Secure document upload
  • Biometric login
Features
Read full description

Keep your retirement account within reach with the mobile benefits app from Invisor. FEATURES • Enrollment: Register and enroll in your plan in minutes • Forecast: Get a retirement income forecast • Monitor: Check your balance and investment performance • Save: Change your paycheck contributions • Invest: Choose and rebalance investments • Upload: Snap photos of documents and submit them securely • Learn: Explore and grow with our financial learning center • Plan: Manage beneficiaries and other account settings • Biometrics: Use face or fingerprint for fast, secure login • Espanol: Usa la aplicación en español

About

Keep the Diff

Features
Read full description

Keep the Diff gives you credit for money you decided not to spend. You talk yourself out of things all the time, and nothing keeps a record of those choices, so they never feel like progress. Keep the Diff keeps that record. PLANNED SPEND MINUS ACTUAL SPEND EQUALS THE DIFF It comes down to two numbers: 1. What you were ready to spend. The dinner you nearly ordered, the jacket in the tab you closed. 2. What you actually spent. Often nothing. There is a "Didn't buy it" button for the common case. The difference is yours. It adds up by week, by month, and toward whatever you are saving for. PLAN IT BEFORE YOU SPEND IT Plan a spend is the other way round: put in what you are ready to spend on something coming up, pick later today, tomorrow morning or in three days, and get on with your evening. When that time comes the app asks what you actually spent, and the Diff is the gap. Until then, a countdown on Home and on the Lock Screen shows when the question is coming. One switch in Settings turns the countdown off. Planning and answering are free. YOU DECIDE WHAT COUNTS There is no budget to keep and no challenge to pass. Keep the Diff never tells you what to spend, never links your bank account, and never shows you a red number. WHAT IS FREE Logging decisions is free. So is this week's total, your recent history, and the weekly recap you can share. So is choosing the currency you think in, fifteen of them, each in its own format. Your milestones are marked as you reach them, and you can share one. WHAT PREMIUM ADDS - Your full history, with CSV export - Categories and breakdowns - Goals, with a photo of the thing you are saving for, and a projected pace toward each one - Recurring Diffs, so a canceled subscription counts every month, for up to a year - Sync across every device you sign in on - Widgets, including one for each goal, Lock Screen entry, and the watch app - The Mac app - App Lock: Face ID, Touch ID or your passcode in front of your numbers NOW IN 21 LANGUAGES Keep the Diff speaks your language. YOUR MONEY STAYS YOURS TO KNOW ABOUT Keep the Diff does not connect to your bank. You never link an account, hand over a bank password, or share a transaction feed. An account is optional, and logging never needs one. If you sign in and turn on sync, your ledger is encrypted on your device before it leaves, so we never see anything you write down. No analytics, no tracking. PREMIUM SUBSCRIPTION Keep the Diff Premium is $31.99 per year paid now, $39.99 per year starting with a 7 day free trial for new subscribers, or $4.99 per month. Premium Lifetime is a one-time purchase of $89.99. Payment is charged to your Apple Account at confirmation of purchase. The subscription renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period, and your account is charged for renewal within 24 hours before the period ends. Manage the subscription, or turn off auto-renew, in your Apple Account settings after purchase. Privacy policy: https://keepthediff.com/privacy Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Invisor 401k4 screens
Keep the Diff4 screens

Verdict

The call

The clearest difference is in-app purchases: Invisor 401k at none against Keep the Diff's 2. Keep the Diff's advantage is update cadence (every 6 days vs monthly) and device support (4 vs 2). On price, ads and iOS requirement 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Keep the Diff sells 2 in-app purchases, starting at $4.99 per month. Invisor 401k asks for nothing beyond the download.

UpkeepUpdate frequency

Invisor 401k ships an update monthly, Keep the Diff every 6 days. The most recent releases landed on October 16, 2026 and October 14, 2026 respectively.

Scorecard3 real differences · 6 level
Invisor 401k versus Keep the Diff: the parameters behind the verdict, then further details
ParameterInvisor 401kKeep the Diff
PriceFreeFree
Rating1.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyMonthlyEvery 6 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad, Mac, Apple Watch — better
Requires iOS17.017.0
Further details — not scored
Size34 MB13 MB
Age rating4+4+
DeveloperSchwab Retirement Technologies Inc.Augustus Travels LLC

In-app purchases

None

Invisor 401k

No in-app purchases

2 purchases

Keep the Diff

Subscriptions2
  • Premium Monthly$4.991 Month
  • Premium Annual7 Days trial$39.991 Year

Questions

Is Invisor 401k free?
Invisor 401k is free to download, with no in-app purchases.
Is Keep the Diff free?
Keep the Diff is free to download, with in-app purchases available.
Do Invisor 401k or Keep the Diff have ads?
Neither Invisor 401k nor Keep the Diff shows ads.
Which is updated more often, Invisor 401k or Keep the Diff?
Invisor 401k ships an update monthly, and Keep the Diff every 6 days. Most recently, Invisor 401k was updated on October 16, 2026 and Keep the Diff on October 14, 2026.

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