# Partial Difference Subtraction vs Sweet Olivia

The clearest difference is price: Sweet Olivia at Free against Partial Difference Subtraction's $3.99. Sweet Olivia also leads on update cadence (every 4 months vs every 9 months) and iOS requirement (15.0 vs 17.6). Partial Difference Subtraction's advantage is in-app purchases (none vs 8) and ads (none vs shown). On device support there is nothing between them.

Sweet Olivia is free to download; Partial Difference Subtraction costs $3.99 up front. Sweet Olivia sells 8 in-app purchases, starting at $7.99 per month. Partial Difference Subtraction asks for nothing beyond the download.

Partial Difference Subtraction ships an update every 9 months, Sweet Olivia every 4 months. The most recent releases landed on October 8, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | Partial Difference Subtraction | Sweet Olivia |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | — | **[3.5 (119 ratings)](https://appshunter.io/ios/app/sweet-olivia-summer-camp/id1238728464/reviews)** |
| Number of ratings | — | **119** |
| Positive reviews | — | 54.2% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 9 months | **Every 4 months** |
| Monetization | — | Free with in-app purchases |
| Size | 1 MB | 270 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Esa Helttula](https://appshunter.io/developer/339440196) | [TutoTOONS](https://appshunter.io/developer/1036166992) |

## What reviewers say

### Partial Difference Subtraction

[App page](https://appshunter.io/ios/app/partial-difference-subtraction/id351023078)

**Features:** macOS Compatibility

**In-app purchases:** none


### Sweet Olivia

[App page](https://appshunter.io/ios/app/sweet-olivia-summer-camp/id1238728464)

Engage in a variety of summer camp activities, including pet care, dress-up, and creative design. Enjoy mini-games like lemonade making, s'mores roasting, and kayaking.

**Highlights:** Pet dog care (feed, play, bathe), Summer camp dress-up and makeover, Camper decoration and cleanup, Lemonade making and s'mores, Kayaking race game, Collect trophies and diamonds

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TutoClub Membership Monthly | $7.99 | per month |
| TutoClub Membership Yearly | $49.99 | per year |
| Hair Styling | $1.99 | one-time |
| No Ads | $1.99 | one-time |
| Lemonade | $1.99 | one-time |
| Camper Cleanup | $1.99 | one-time |
| Unlock All + No Ads | $3.99 | one-time |
| Lifetime Subscription | $119.99 | one-time |


## Frequently asked questions

### Is Partial Difference Subtraction free?

Partial Difference Subtraction costs $3.99, with no in-app purchases.

### Is Sweet Olivia free?

Sweet Olivia is free to download, with in-app purchases available.

### Do Partial Difference Subtraction or Sweet Olivia have ads?

Sweet Olivia shows ads; Partial Difference Subtraction does not.

### Which is updated more often, Partial Difference Subtraction or Sweet Olivia?

Partial Difference Subtraction ships an update every 9 months, and Sweet Olivia every 4 months. Most recently, Partial Difference Subtraction was updated on October 8, 2026 and Sweet Olivia on October 23, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*