Comparison

Solvent GPT vs CardStack

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

Head to head
About

Solvent GPT

This AI-powered finance tool offers an alternative to traditional hedge funds, providing advanced management capabilities without the high annual fees. It aims to make sophisticated investment strategies accessible to a wider audience.

Highlights
  • AI-powered hedge fund management
  • Cost-effective alternative to traditional funds
  • Advanced investment strategies
  • Included with every account
Features
Read full description

AI-Powered Hedge Fund Manager Included with Every Account: A Cost-Effective Alternative to Traditional Hedge Funds Charging 3-5% Annual Fees.

About

CardStack

This app helps you maximize rewards and savings from your credit cards. It tracks perks, statement credits, and points, offering AI-powered advice to ensure your cards always pay you back more than they cost. Get personalized recommendations and automated offer management.

Highlights
  • Maximize cashback and offers
  • Track statement credits automatically
  • Redeem points at peak value
  • AI agent for personalized advice
  • See which card earns the most
  • Track points portfolio
  • Annual fee advisor
Features
Currently charting
Read full description

CardStack helps you save $500+ every year on the credit cards you already carry. Maximize cashback and offers, never miss a statement credit, redeem your points at peak value, and let our AI agent do the heavy lifting — so your cards always pay you back more than they cost. - SAVE MORE WITH CARD-LINKED OFFERS Automatically add Amex and Chase offers to your cards so you earn cashback and statement credits on purchases you're already making. Browse active offers, see personalized picks matched to your spending, and track every redemption — all in one place. - NEVER MISS A STATEMENT CREDIT Track every credit across all your cards automatically — dining, travel, streaming, airline, and more. See which credits are available, which are expiring soon, and which you've already used. Get reminders before you lose them. - USE THE RIGHT CARD, EVERY TIME Instantly see which card earns the most for dining, travel, groceries, gas, and every other category. Whether you're booking a flight or grabbing coffee, CardStack tells you the best card to pull out — so you never miss points or cashback. - STACK AI AGENT — YOUR PERSONAL CARD ADVISOR Meet Stack, a conversational AI agent that knows your entire card portfolio. Ask it anything: "What's the best card for this hotel booking?" "Am I missing any credits this month?" "Compare my Sapphire Reserve vs. Platinum for a trip to Tokyo" "How much value am I leaving on the table?" Stack doesn't just answer — it takes action. It can mark credits as redeemed, set reminders, update your points balances, and generate weekly spending reports showing exactly where you earned and where you missed. - SEE HOW MUCH YOU'RE EARNING (AND MISSING) Connect your bank securely with Plaid and unlock full spending analysis: See points earned vs. points missed on every transaction Get your optimization score — what percentage of spend hit the best card View breakdowns by category: flights, hotels, restaurants, groceries, and more Get "Fix My Stack" recommendations showing exactly which card to swap in - TRACK YOUR POINTS PORTFOLIO Monitor balances across Amex Membership Rewards, Chase Ultimate Rewards, Capital One Miles, Citi ThankYou, and more. See estimated cash values, explore transfer partners, and know exactly what your points are worth. - COVER YOUR ANNUAL FEES — OR CANCEL WITH CONFIDENCE CardStack's Renewal Advisor calculates whether each card pays for itself based on your real usage. When your annual fee posts, get a clear verdict: keep, downgrade, or cancel — backed by data, not guesswork. - SMART NOTIFICATIONS THAT SAVE YOU MONEY Credits expiring soon Annual fee renewal approaching Offers about to expire Missed optimization opportunities AI-generated insights based on your spending - CARDSTACK+ UNLOCKS THE FULL SYSTEM Upgrade to unlock powerful automation and intelligence: Stack AI Agent with full conversation history Secure bank sync with Plaid for automatic transaction analysis Auto-detect statement credits from your transactions Earned vs. missed rewards analysis across every purchase Safari extension that shows the best card while you shop Automatically add Amex & Chase offers Weekly AI spending reports and optimization scores Personalized "Fix My Stack" recommendations Sync across all your devices YOUR CARDS ARE COSTING YOU — OR PAYING YOU. KNOW WHICH. CardStack turns your credit cards into a money-saving system. Every credit tracked. Every offer captured. Every purchase optimized. Download CardStack and start saving. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Solvent GPT4 screens
CardStack4 screens

Verdict

The call

The clearest difference is update cadence: Solvent GPT at every 5 days against CardStack's every 2 weeks. CardStack's advantage is chart position (#175 vs unranked). On price, review sentiment, ads and in-app purchases 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. Solvent GPT sells 3 in-app purchases, starting at $89.00 per month and CardStack sells 3 in-app purchases, starting at $12.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Solvent GPT ships an update every 5 days, CardStack every 2 weeks. The most recent releases landed on November 4, 2026 and November 5, 2026 respectively.

Scorecard2 real differences · 9 level
Solvent GPT versus CardStack: the parameters behind the verdict, then further details
ParameterSolvent GPTCardStack
PriceFreeFree
Rating—4.5 (53 ratings) — better
Positive reviews100.0% of reviews — better94.4% of reviews
Number of ratings—53 — better
Update frequencyEvery 5 days — betterEvery 2 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
Best chart rank—#175 — better
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.6 — better17.0
Further details — not scored
Size23 MB259 MB
Age rating4+4+
DeveloperSolvent.Life LTDSPACE ROBOTS INC

Customer experience

Solvent GPT

Written reviews7 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

CardStack

All ratings53 ratings
Positive90.6%
Neutral0.0%
Negative9.4%
Written reviews18 reviews
Positive94.4%
Neutral0.0%
Negative5.6%

In-app purchases

3 purchases

Solvent GPT

Subscriptions3
  • SolventGPT Pro$89.001 Month
  • SolventGPT Pro+$199.001 Month
  • Unlimited$299.001 Month
3 purchases

CardStack

Subscriptions2
  • CardStack+7 Days trial$12.991 Month
  • CardStack+7 Days trial$89.991 Year
One-time1
  • CardStack+ Lifetime$239.99

Questions

Is Solvent GPT free?
Solvent GPT is free to download, with in-app purchases available.
Is CardStack free?
CardStack is free to download, with in-app purchases available.
Do Solvent GPT or CardStack have ads?
Neither Solvent GPT nor CardStack shows ads.
Which is updated more often, Solvent GPT or CardStack?
Solvent GPT ships an update every 5 days, and CardStack every 2 weeks. Most recently, Solvent GPT was updated on November 4, 2026 and CardStack on November 5, 2026.

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