Comparison

NPV Calculator by ND, calc vs Keepsies

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

Head to head
About

NPV Calculator by ND, calc

Calculate the net present value (NPV) for uneven or even future cash flows. This tool offers unlimited years and easy-to-use functionality, with results easily copied to your clipboard.

Highlights
  • Calculate Net Present Value
  • Copy result to clipboard
  • Unlimited number of years
  • Easy to use interface
  • Handles uneven cash flows
Features
Read full description

Calculate the net present value (NPV) of future cash flows using a chosen discount rate. Supports both uneven and even cash flow streams to help evaluate investment opportunities. Results are estimates for informational purposes only. DISCLAIMER: This app is a calculation tool and should not be considered financial, investment, legal, or tax advice. The results are for reference only and should not be relied upon as a basis for any financial decisions. Users should evaluate independently and exercise caution before making decisions. We are very happy to serve you. If you have any requests, don't hesitate to contact us. - https://www.facebook.com/phan.nhatdang.3/ - phannhatd@gmail.com

About

Keepsies

Securely organize and search through all your home's essential details, memories, and moments. This digital journal helps you keep track of everything important about your living space.

Highlights
  • Searchable home journal
  • Organize essential details
  • Securely store memories
  • Track important moments
  • Free trial available
Features
Read full description

Keepsies is your searchable home journal, securely organizing every essential detail, memory, and moment exactly when you need it. Keepsies offers a free one week trial, after which a monthly or annual subscription is required for all access to features. Download Keepsies and organize your home essentials today! --- If you subscribe to Keepsies via the App Store, payment will be charged to your Apple ID account upon confirmation of purchase. Your subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current subscription period. Your account will be charged for renewal within 24 hours prior to the end of the current period, at the rate of your selected plan (monthly or annual). Manage your subscription and turn off auto-renewal anytime through your Apple ID account settings. --- Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: http://www.keepsies.io/privacy-policy --- Questions? Email hello@keepsies.io

Screenshots

NPV Calculator by ND, calc3 screens
Keepsies4 screens

Verdict

The call

The clearest difference is rating: Keepsies at 5.0 against NPV Calculator by ND, calc's 4.1. Keepsies also leads on ads (none vs shown) and update cadence (fortnightly vs every 3 months). NPV Calculator by ND, calc's advantage is monetization model (free with in-app purchases vs subscription) and ratings volume (37 vs 2). On price, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. NPV Calculator by ND, calc sells 1 one-off in-app purchase and Keepsies sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Keepsies holds the better App Store score, 5.0 against 4.1. That said, the two scores are not equally well evidenced: NPV Calculator by ND, calc has 37 ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

NPV Calculator by ND, calc ships an update every 3 months, Keepsies fortnightly. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

Scorecard6 real differences · 4 level
NPV Calculator by ND, calc versus Keepsies: the parameters behind the verdict, then further details
ParameterNPV Calculator by ND, calcKeepsies
PriceFreeFree
Rating4.1 (37 ratings)5.0 (2 ratings) — better
Positive reviews100.0% of reviews—
Number of ratings37 — better2
Update frequencyEvery 3 monthsFortnightly — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases — betterSubscription
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better15.1
Further details — not scored
Size8 MB53 MB
Age rating4+4+
DeveloperPhan Nhat ĐangKeepsies LLC

Customer experience

NPV Calculator by ND, calc

All ratings38 ratings
Positive76.3%
Neutral5.3%
Negative18.4%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Keepsies

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

NPV Calculator by ND, calc

One-time1
  • Remove ads$1.99
2 purchases

Keepsies

Subscriptions2
  • Keepsies Monthly7 Days trial$4.991 Month
  • Keepsies Yearly7 Days trial$44.991 Year

Questions

Is NPV Calculator by ND, calc free?
NPV Calculator by ND, calc is free to download, with in-app purchases available.
Is Keepsies free?
Keepsies is free to download, with in-app purchases available.
Which has better reviews, NPV Calculator by ND, calc or Keepsies?
Keepsies is rated higher. NPV Calculator by ND, calc averages 4.1 out of 5 from 37 ratings, while Keepsies averages 5.0 from 2 ratings.
Do NPV Calculator by ND, calc or Keepsies have ads?
NPV Calculator by ND, calc shows ads; Keepsies does not.
Which is updated more often, NPV Calculator by ND, calc or Keepsies?
NPV Calculator by ND, calc ships an update every 3 months, and Keepsies fortnightly. Most recently, NPV Calculator by ND, calc was updated on November 3, 2026 and Keepsies on November 4, 2026.

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