Comparison

Booster NZ vs Calk NZ

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

Head to head
About

Booster NZ

Manage your KiwiSaver, investments, and daily spending all in one place. Track your wealth, link bank accounts, and access smart financial tools and educational resources to improve your money management.

Highlights
  • KiwiSaver account management
  • Investment tracking
  • Daily spending management
  • Link bank accounts
  • Financial snapshot
  • Budgeting tools
  • Educational resources
Features
Read full description

Manage your KiwiSaver account, track your wealth and more with the Booster NZ app. And for those who want to save and spend better there’s Savvy, also in the Booster app. Elevate your finances with Booster NZ and Savvy. Take control of your finances with the Booster NZ app, your one-stop solution for managing your KiwiSaver account, SuperScheme, investments and daily spending. Download now for a bird's-eye view of your finances, helping you to take control anywhere, anytime. And get Savvy in the Booster NZ app – Savvy’s the investment account with a sweet return, linked to a debit card and smart app for your day-to-day spending, with no card or monthly account fees*. Savvy, it’s your money, smarter. Booster NZ: Unified account management: View and manage your KiwiSaver account, SuperScheme, investments and daily expenses with Booster in one place. See your KiwiSaver account balance, make contributions and track government contributions, as well as keep an eye on your fund’s performance. Whether you're at home or on the move, get on-the-go money management and stay in control of your finances. Financial snapshot: Link your bank accounts, add details of your shares, property and other investments to get a complete view of your money. Smart financial tools and educational resources: Access free tools like the mybudgetpal to get a better understanding of your spending habits. Learn about managing your money with our comprehensive resource library, including videos and articles. Savvy: Take your savings to the next level. Savvy puts you in control of your money, learning how you spend and helping you save better with a suite of powerful tools. With Savvy, you can get more out of your money. Track where your money is going, with the convenience of a smart money app, spend with the convenience of a Mastercard debit card and get paid competitive returns on every dollar in your account. The Booster Savvy Scheme (‘Savvy’) is not a bank account and Booster is not a registered bank. Savvy is a managed fund and Booster Investment Management Limited is the manager and issuer of Savvy. Savvy’s Product Disclosure Statement and other important information about Savvy (including a comparison highlighting some of the differences between Savvy and a bank account) is available at boostersavvy.co.nz. *Some other fees, such as international transaction fees and card replacement fees, may apply. Booster Investment Management Limited is the manager and issuer of the Booster KiwiSaver Scheme (‘Scheme’). The Scheme’s product disclosure statements are available at booster.co.nz Who we are We’re a Kiwi financial services company founded in 1998. We’re committed to helping New Zealanders make sense of money. Our app is just one step on that journey. Follow us Web: www.booster.co.nz Facebook: www.facebook.com/boostermoneynz/ LinkedIn: www.linkedin.com/company/booster-nz More info When you download any app provided by Booster, you agree to the Booster terms and conditions and any changes to these terms and conditions without notification. Feedback? Want to help to make the Booster NZ app better? Please tell us what you like or how we could improve by: • emailing us at info@booster.co.nz • sending feedback through the app. Check out our FAQs: www.booster.co.nz/app-faqs Fix problems with our troubleshooting guide: www.booster.co.nz/troubleshooting

About

Calk NZ

Features
Read full description

Calk NZ is a collection of 146 calculators built for New Zealanders. Every result is based on current IRD rates and New Zealand rules for the 2026-27 financial year. No sign-up. All calculations run on your device — your financial data never leaves it. Supported by unobtrusive ads. TAX & PAY • Income tax and PAYE with all five brackets and the ACC earner's levy • Take-home pay, secondary tax, bonus tax, schedular payments (IR330C) • GST, provisional tax, trust tax (39% trustee rate), FIF and crypto tax FAMILY & BENEFITS • Working for Families, FamilyBoost (40% childcare rebate), Best Start • Child support (IRD 8-step formula), paid parental leave, NZ Super HOME & MONEY • Mortgage repayments, refix strategy, offset accounts, lump-sum savings • KiwiSaver projections with the 2026 3.5% default rate • Term deposits with RWT, net worth, budgeting, power plans …and 100+ more: car costs, WoF & rego, insurance, farming, building, immigration. EVERY CALCULATOR SHOWS ITS WORKING Step-by-step formulas, current-year rates with sources, and worked examples — verified against Inland Revenue (IRD), ACC, Employment NZ / MBIE, RBNZ, Work and Income (MSD), NZTA Waka Kotahi, Stats NZ, Kāinga Ora, NZ Customs, BRANZ and Beef + Lamb New Zealand publications. Each page carries a "last reviewed" date. IN ENGLISH AND TE REO MĀORI The only NZ calculator collection fully available in both languages. NEW IN 1.2.0 • Watch a short ad to pause all ads for 6 hours • Six in-depth farming guides and new rural calculators • Favourites and recently used calculators on the home screen Rates update automatically — no app update needed when IRD figures change. Disclaimer: Calk NZ provides general information, not financial advice. For decisions that affect your tax position, consult a qualified professional.

Screenshots

Booster NZ4 screens
Calk NZ4 screens

Verdict

The call

The clearest difference is in-app purchases: Booster NZ at none against Calk NZ's 1. Booster NZ also leads on ads (none vs shown). On price, update cadence, device support 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. Calk NZ sells 1 one-off in-app purchase. Booster NZ asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 21, 2026 and October 9, 2026 respectively.

Scorecard2 real differences · 8 level
Booster NZ versus Calk NZ: the parameters behind the verdict, then further details
ParameterBooster NZCalk NZ
PriceFreeFree
Rating5.0 (3 ratings) — better—
Positive reviews54.5% of reviews—
Number of ratings3 — better—
Update frequencyEvery 3 weeksEvery 3 weeks
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.615.0 — better
Further details — not scored
Size42 MB144 MB
Age rating4+4+
DeveloperBooster Financial Services LtdKonstantin Iakovlev

In-app purchases

None

Booster NZ

No in-app purchases

1 purchases

Calk NZ

One-time1
  • Remove Ads$2.99

Questions

Is Booster NZ free?
Booster NZ is free to download, with no in-app purchases.
Is Calk NZ free?
Calk NZ is free to download, with in-app purchases available.
Do Booster NZ or Calk NZ have ads?
Calk NZ shows ads; Booster NZ does not.
Which is updated more often, Booster NZ or Calk NZ?
Booster NZ ships an update every 3 weeks, and Calk NZ every 3 weeks. Most recently, Booster NZ was updated on October 21, 2026 and Calk NZ on October 9, 2026.

Other comparisons